No, it was recorded at a big concert, where they had about 10 video cameras and mixed it all together somehow ( I don't know the details) on their mixing desk, along with the audio from the desk as well. I've purchased Quick Time Pro, I think it's going to be easier to use that, than to waste my time trying to get Camtasia to work, have spent about 10 hours so far, with no luck!

in your project, be sure you set editing dimensions the same as the video dimensions; initiate a custom production to MP4 with controller; on the video tab, set H264 profile to high, encoding mode to quality at 70%, on audio settings tab set 256 kbps [you'll get some audio compression, but doubt you'll hear it?]

in my opinion, yes; I host all my videos on-line; they are all created using the criteria listed above; many of my videos contain interactive items [hotspots, TOC, quizzes, etc.], so I also set keyframes at 1 second

You can try AVi format, files are a little bigger but audio is PCM at CD quality is 44k-16 bit or you could go higher, depending on the source bitrate, Video framerate is 15 fps on mine, you could go to 30 but the already big file would be gigantic. Good luck!!